Study Guide for Campbell Biology
Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 39, Problem 3TYK

Small molecules in the cell that amplify signals and transfer them to other effectors are known as

  1. a. phytochromes.
  2. b. transcription factors.
  3. c. hormones.
  4. d. second messengers.
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